1128116786 has 8 divisors (see below), whose sum is σ = 1693546860. Its totient is φ = 563601168.

The previous prime is 1128116771. The next prime is 1128116789. The reversal of 1128116786 is 6876118211.

It can be written as a sum of positive squares in 2 ways, for example, as 1057875625 + 70241161 = 32525^2 + 8381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1128116789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225521 + ... + 230468.

Almost surely, 2^1128116786 is an apocalyptic number.

1128116786 is a deficient number, since it is larger than the sum of its proper divisors (565430074).

1128116786 is a wasteful number, since it uses less digits than its factorization.

1128116786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457228.

The product of its digits is 32256, while the sum is 41.

The square root of 1128116786 is about 33587.4498287679. The cubic root of 1128116786 is about 1041.0014964407.

The spelling of 1128116786 in words is "one billion, one hundred twenty-eight million, one hundred sixteen thousand, seven hundred eighty-six".